From January, 1985 to October, 1992, ll patients (6 males and 5 females) with venous ulcers were treated in our institution. The causes of incurable leg ulcers were primary varicose veins in 8 patients and deep vein thrombosis in 3 patients. Solitary leg ulcers, 10×4 to 50×50mm in size, were seen in 7 cases and multiple ulcers in 4 cases. The venous ulcers following primary varicose veins were completely cured by extensive whole saphenous vein stripping and excision of varices in 6 cases. In addition, middle layer skin grafting was performed in 2 of 6 cases. Lumbar sympathectomy for incurable venous ulcers following deep vein thrombosis was performed in 2 of three cases. Conservative therapy such as a resting, elevation of the lower extremity and a compression dressing was carried out in 4 of the 11 cases. All patients with venous ulcers were discharged with complete healing. A recurrence was the only one, who underwent lumbar sympathectomy following deep vein thrombosis, 5 months after surgery. However, all other patients with venous leg ulcers were still well in the follow-up examinations of 7 to 49 months after sugery.